101212113123 has 48 divisors (see below), whose sum is σ = 160776252000. Its totient is φ = 60845475840.

The previous prime is 101212113113. The next prime is 101212113151. The reversal of 101212113123 is 321311212101.

It is not a de Polignac number, because 101212113123 - 2⁸ = 101212112867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101212113096 and 101212113105.

It is not an unprimeable number, because it can be changed into a prime (101212113113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11752243 + ... + 11760851.

It is an arithmetic number, because the mean of its divisors is an integer number (3349505250).

Almost surely, 2^101212113123 is an apocalyptic number.

101212113123 is a deficient number, since it is larger than the sum of its proper divisors (59564138877).

101212113123 is a wasteful number, since it uses less digits than its factorization.

101212113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572 (or 9569 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 101212113123 its reverse (321311212101), we get a palindrome (422523325224).

The spelling of 101212113123 in words is "one hundred one billion, two hundred twelve million, one hundred thirteen thousand, one hundred twenty-three".